Dear all, I have found a issue when connecting my asterisk soft switch with Acme packet SBC.
1) No problem for outgoing calls. ie asterisk to Acme SBC 2) Problem is at incoming. ie Acme to Asterisk 3) My asterisk is connected to a PSTN switch via SS7 with digium interface. 4) When I getting a call from Acme, call is connected, but once answered it is disconnected. 5) I have taken lot of traces and found that session version that I sends on SDP/session progress is not similar to session version on SDP/200 OK message. Acme also complain me, according to RFC3261, the SDP header should be identical for both 200 OK and Session progress. See bullet #2 in ch 13.2.1 (RFC 3261): o If the initial offer is in an INVITE, the answer MUST be in a reliable non-failure message from UAS back to UAC which is correlated to that INVITE. For this specification, that is only the final 2xx response to that INVITE. *That same exact* * answer *MAY also be placed in any provisional responses sent prior to the answer. The UAC MUST treat the first session description it receives as the answer, and MUST ignore any session descriptions in subsequent responses to the initial INVITE. 6) This was quote from the traces *SDP at Session Progress (183 Session Progress, with session description)* Message body Session Description Protocol Session Description Protocol Version (v): 0 Owner/Creator, Session Id (o): root 26823 26823 IN IP4 203.189.191.138 Owner Username: root Session ID: 26823 Session Version: *26823* *SDP at 200OK* Message body Session Description Protocol Session Description Protocol Version (v): 0 Owner/Creator, Session Id (o): root 26823 26824 IN IP4 203.189.191.138 Owner Username: root Session ID: 26823 Session Version: *26824* ** Hope this info will enough to understand my question. I am grateful to you if you can help me on this to solve the issue very soon. ** *Kind Rgds* *Daminda*
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